Finding the Fourth Proportional to 12,895.75, 17,803.90 and 8,426.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,895.75 : 17,803.90 = 8,426.98 : x
2. Step 2: Convert to fraction form
   12,895.75/17,803.90 = 8,426.98/x
3. Step 3: Cross multiply
   12,895.75x = 17,803.90 × 8,426.98
4. Step 4: Simplify right side
   12,895.75x = 150,032,994.46
5. Step 5: Solve for x
   x = 150,032,994.46/12,895.75
6. Step 6: Final answer
   x = 11,634.30